XML 24 R57.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Long-Term Debt - Additional Information (Detail) (USD $) In Millions, unless otherwise specified | 12 Months Ended |
--- | --- | ---
Dec. 31, 2012 | Dec. 31, 2011
Debt Instrument [Line Items] |  |
Term for credit facility | 5 years |
Minimum percentage of owned subsidiaries | 100.00% |
Letter of Credit [Member] |  |
Debt Instrument [Line Items] |  |
Limit for the issuance of standby letters of credit | $ 7.5 |
Revolving Credit Facility [Member] |  |
Debt Instrument [Line Items] |  |
Borrowing capacity | 75.0 |
Credit facility amount increase provision on condition | 50 |
Credit Facility amount outstanding | $ 15.0 | $ 15.0
Credit Facility Interest Periods | 1, 2, 3 or 6 months |
Credit facility Interest rate | 2.35% |
Minimum percentage of owned subsidiaries | 100.00% |
Acquisitions | Less than 100% owned subsidiaries |
Minimum interest coverage ratio | At least 4.00:1 |
Minimum percentage of interest adjustment | 4.00 |
Leverage ratio | No greater than 2.75:1 |
Maximum percentage of indebtedness | 2.75 |
Revolving Credit Facility [Member] | Maximum [Member] |  |
Debt Instrument [Line Items] |  |
percentage of margin on principal amount, maximum | 2.50% |
Commitment fee, maximum | 0.50% |
Revolving Credit Facility [Member] | Minimum [Member] |  |
Debt Instrument [Line Items] |  |
percentage of margin on principal amount, maximum | 0.75% |
Commitment fee, maximum | 0.35% |

X
- Details
Name: | us-gaap_DebtInstrumentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount borrowed under the credit facility as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
Name: | us-gaap_LineOfCreditFacilityAmountOutstanding
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The maximum amount of borrowing capacity under a line of credit that is available as of the balance sheet date for a specific purpose other than for financing goods acquired for inventory or imminent delivery to a customer. + References No definition available. + Details
Name: | us-gaap_LineOfCreditFacilityCapacityAvailableForSpecificPurposeOtherThanForTradePurchases
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The effective interest rate during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
Name: | us-gaap_LineOfCreditFacilityInterestRateDuringPeriod
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 2, 4 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
Name: | us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility. + References No definition available. + Details
Name: | us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The parent entity's interest in net assets of the subsidiary, expressed as a percentage. + References No definition available. + Details
Name: | us-gaap_MinorityInterestOwnershipPercentageByParent
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Credit Facility Term + References No definition available. + Details
Name: | vrts_CreditFacilityTerm
Namespace Prefix: | vrts_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Leverage Ratio + References No definition available. + Details
Name: | vrts_LeverageRatio
Namespace Prefix: | vrts_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line Of Credit Facility Basis Spread On Alternate Base Rate + References No definition available. + Details
Name: | vrts_LineOfCreditFacilityBasisSpreadOnAlternateBaseRate
Namespace Prefix: | vrts_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line of Credit Facility Description of London Inter Bank Offered Rate + References No definition available. + Details
Name: | vrts_LineOfCreditFacilityDescriptionOfLondonInterBankOfferedRate
Namespace Prefix: | vrts_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line Of Credit Facility Increase Additional Borrowings On Condition Satisfaction + References No definition available. + Details
Name: | vrts_LineOfCreditFacilityIncreaseAdditionalBorrowingsOnConditionSatisfaction
Namespace Prefix: | vrts_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Maximum Leverage Ratio + References No definition available. + Details
Name: | vrts_MaximumLeverageRatio
Namespace Prefix: | vrts_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | duration

X
- Definition Minimum Interest Coverage Ratio One + References No definition available. + Details
Name: | vrts_MinimumInterestCoverageRatioOne
Namespace Prefix: | vrts_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Minimum Interest Coverage Ratio Under Credit Facility + References No definition available. + Details
Name: | vrts_MinimumInterestCoverageRatioUnderCreditFacility
Namespace Prefix: | vrts_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | duration

X
- Definition Minority Interest Ownership Percentage By Parent Description + References No definition available. + Details
Name: | vrts_MinorityInterestOwnershipPercentageByParentDescription
Namespace Prefix: | vrts_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration